68221301 has 2 divisors, whose sum is σ = 68221302. Its totient is φ = 68221300.

The previous prime is 68221291. The next prime is 68221397. The reversal of 68221301 is 10312286.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64802500 + 3418801 = 8050^2 + 1849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68221301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68221801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34110650 + 34110651.

It is an arithmetic number, because the mean of its divisors is an integer number (34110651).

Almost surely, 2^68221301 is an apocalyptic number.

It is an amenable number.

68221301 is a deficient number, since it is larger than the sum of its proper divisors (1).

68221301 is an equidigital number, since it uses as much as digits as its factorization.

68221301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 68221301 is about 8259.6186957995. The cubic root of 68221301 is about 408.6078122719.

Adding to 68221301 its reverse (10312286), we get a palindrome (78533587).

The spelling of 68221301 in words is "sixty-eight million, two hundred twenty-one thousand, three hundred one".